Relation Between Magnetic Barkhausen Noise and Hardness for Jominy Quench Tests in SAE 4140 and 6150 Steels

Autor(es)

Franco, Freddy A. ^[1] ; Gonzalez, M. F. R. ^[2] ; de Campos, M. F. ^[3] ; Padovese, L. R. ^[4]

Afiliação do(s) autor(es)

^[1] Soc Educ Santa Catarina, BR-89206001 Joinville, SC - Brazil

^[2] Univ Sao Paulo, Sch Engn, Dept Met & Mat Engn, BR-05508030 Sao Paulo - Brazil

^[3] Univ Fed Fluminense, EEIMVR, BR-27255125 Volta Redonda, RJ - Brazil

^[4] Univ Sao Paulo, Sch Engn, Dept Mech Engn, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF NONDESTRUCTIVE EVALUATION; v. 32, n. 1, p. 93-103, MAR 2013.
• Citações Web of Science: 33

Resumo

The nondestructive Magnetic Barkhausen Noise (MBN) technique was applied for the evaluation of SAE 4140 and SAE 6150 steels after a Jominy end-quench test. Microstructures were also characterized by SEM (Scanning Electron Microscope) and hardness tests. MBN measurements were performed on the same sample regions at three excitation frequencies. Different parameters of the measured signals (signal peak position and height, and Root mean square) were calculated. A relationship between mechanical hardness and MBN parameters was found for both materials, with the best correlation coefficient being found in low excitation frequency range. (AU)

• Processo FAPESP: 05/57146-0 - Desenvolvimento de ensaio não destrutivo baseado no ruído magnético de Barkhausen para caracterização de tensões elásticas e deformações plásticas em aços estruturais
• Beneficiário: Freddy Armando Franco Grijalba
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto